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CSVWithNamesAndTypes

InputOutputAlias
✔✔

Description​

Also prints two header rows with column names and types, similar to TabSeparatedWithNamesAndTypes.

Example Usage​

Inserting Data​

tip

Starting from version 23.1, ClickHouse will automatically detect headers in CSV files when using the CSV format, so it is not necessary to use CSVWithNames or CSVWithNamesAndTypes.

Using the following CSV file, named as football_types.csv:

Create a table:

Insert data using the CSVWithNamesAndTypes format:

Reading Data​

Read data using the CSVWithNamesAndTypes format:

The output will be a CSV with a two header rows for column names and types:

Format Settings​

note

If setting input_format_with_names_use_header is set to 1, the columns from input data will be mapped to the columns from the table by their names, columns with unknown names will be skipped if setting input_format_skip_unknown_fields is set to 1. Otherwise, the first row will be skipped.

note

If setting input_format_with_types_use_header is set to 1, the types from input data will be compared with the types of the corresponding columns from the table. Otherwise, the second row will be skipped.